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The plane defined by the upper border of the bony auditory meatus (porion) bilaterally and the lowest point of the left orbit rim (orbitale) was accepted by the World Congress on Anthropology (Frankfurt) in 1884 as the horizontal reference for human craniometrics. As the science of Gnathology was developed in the 1920s (Charles Stuart, B. B. McCullum, and others) and sophisticated articulator technology to support it, the Frankfort was accepted (by convention) as the reference plane for orientation of the maxillary cast to the upper member of the articulator. All fully- or semi-adjustable articulator systems incorporate a device (usually, facebow or earbow) to record the relationship of the maxillary dental arch to these three points to transfer that relationship to the maxillary cast and articulator.
What else can I help you with?
What is a horizontal angle?
A horizontal angle is an angle between lines on a horizontal plane.
Which plane is the only horizontal plane?
it is the Transverse plane. the transverse, or horizontal plane is a crosswise plane that runs parallel to the ground. this imaginary cut would divide the body or its parts into upper and lower portions.
What is equation of vertical and horizontal plane?
The equation of a vertical plane in three-dimensional space can be expressed as (Ax + By + C = 0), where (A) and (B) are not both zero, indicating a plane that is perpendicular to the horizontal plane. Conversely, the equation of a horizontal plane is given by (z = k), where (k) is a constant that represents the height of the plane above the xy-plane.
Why is a horizontal lines called horizontal?
because they are parallel to the plane of the horizon
What two view of a house would be revealed if a horizontal cutting plane passed midway between the floor and the ceiling and completely bisected the house?
Horizontal plane Frontal plane
Where did the Frankfort horizontal plane get its name?
World anatomists got together in Frankfort, Germany, around 1875 to agree on nomenclature. In defining "anatomical position" they decided that a horizontal plane formed by left and right poria and left orbitale would define anatomical position for the head, hence "Frankfort Horizontal."
What two planes are used to position a dental patient to take a extraoral radiograph?
To position a dental patient for an extraoral radiograph, two anatomical planes are typically used: the Frankfort horizontal plane and the midsagittal plane. The Frankfort horizontal plane is established by aligning the lower border of the eye socket (orbit) with the upper border of the external auditory meatus (ear canal). The midsagittal plane divides the body into equal left and right halves and ensures that the patient's head is symmetrically aligned for accurate imaging. Proper alignment of these planes is crucial for obtaining high-quality radiographs.
How many horizontal planes of symmetry does a regular hexagon have?
Since a hexagon is a horizontal plane figure it cannot have a horizontal plane of symmetry.
What is a horizontal angle?
A horizontal angle is an angle between lines on a horizontal plane.
Which plane is the only horizontal plane?
it is the Transverse plane. the transverse, or horizontal plane is a crosswise plane that runs parallel to the ground. this imaginary cut would divide the body or its parts into upper and lower portions.
Which plane of the body is synonymous with a horizontal or crosswise plane?
transverse
What is equation of vertical and horizontal plane?
The equation of a vertical plane in three-dimensional space can be expressed as (Ax + By + C = 0), where (A) and (B) are not both zero, indicating a plane that is perpendicular to the horizontal plane. Conversely, the equation of a horizontal plane is given by (z = k), where (k) is a constant that represents the height of the plane above the xy-plane.
Why is a horizontal lines called horizontal?
because they are parallel to the plane of the horizon
What do you call on the horizontal line in the Cartesian plane?
The horizontal line in the Cartesian plane is called the x-axis or x-coordinate.
What are the horizontal axis on a Cartesian plane known as?
The Cartesian plane has only 1 horizontal axis and it is known as the x-axis.
The horizontal cut dividing the body in to upper andlower sections is called the?
The horizontal cut is called the transverse plane.
What are Horizontal plane and vertical plane?
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